THANKS, MINE HAS TRANSLUCENT BLACK FINISH WITH DOT INLAYS, NO SB20 ON TRUSS COVER, THE MODEL AND SERIAL ARE INSIDE OF THE PLASTIC ELECTRONICS BACK PLATE, TRYING TO POST PHOTOS BUT CANT SEEM TO GET THEM TO LOAD

THANKS, MINE HAS TRANSLUCENT BLACK FINISH WITH DOT INLAYS, NO SB20 ON TRUSS COVER, THE MODEL AND SERIAL ARE INSIDE OF THE PLASTIC ELECTRONICS BACK PLATE, TRYING TO POST PHOTOS BUT CANT SEEM TO GET THEM TO LOAD

How do you know that its an SB20 than? The sn points to this being build around 1983-84 maybe even earlier. The black translucent is extremely rare. In fact, most of the ones I have seen were actually really really dark green. So if its truely black it would be much earlier than 83